Roll-roofing fastener



Feb. 24, 1931. A. A. GRISWOLD 1,794,072

ROLL ROOFING FASTENER Filed Oct. 21, 1926 Fig-z 1 I} 3 'i atented Feb.24, 1931 warm in g as Fri" ROLL-ROQFING FASTENER- Application filedOctober 21, 1926. Serial No. 143,266.

My invention has reference to an improvement in the means for securingthe lower edge portion of roll roofing, to the roofs of buildings;

- Roll roofing has heretofore been secured to roofs, sidings and thelike, by laying it lengthwise of the roof, the lower edge of an uppercourse overlapping the upper edge of the next lower course of rollroofing. The roll roofing is then secured to the roof or siding bydriving nails through it into the roof or siding. The nail holes thusformed in the roll roofing will cause it, sooner or later, to leak,thereby ruining the utility of the roll roofing and the greater portionof all roll roofing leaks are caused by nail holes through the roofingmaterial. y

The object of my invention is to improve the means for securing rollroofing or the like to roofs, thereby eliminating the driving of nailsor the like, through the overlapping edge portion of the roll roofing.

A further object of my invention is to provide roll roofing with rollroofing fasteners, each fastener having a loop shaped fastening memberwhich is made a part of the roll roofing.

Another object of my invention is to simplify the construction of rollroofing fasteners, whereby the cost of such fasteners is reduced to aminimum.

My invention consists in the peculiar and novel construction of meansfor fastening roll roofin to roofs and the like, said fastening meanshaving details of construction, as will be more fully set forthhereinafter and claimed.

Figure 1 is a top View of a portion of a roof looking in the directionof the arrow a in Figure 3 and showing the upper edge portion of a stripof roll roofing nailed to the roof and the lower edge portion of a stripof roll roofing in position to be secured in place, by my improved rollroofing fasteners.

Figure 2 is a lower edge View, partly in sec tion, of a piece of rollroofing showing on the roll roofing and forming an integral partthereof, the fastening loops of the fastening members.

Figure 3 is a transverse sectional View through the roof and rollroofing, taken on line 3, 3, of Figure 1 and looking in the direction ofthe arrow Z), with the next upper course of roll roofing in position tobe laid and secured in place.

Figure 4 is a sectional view similar to Figure 3 showing the next courseof roll roofing laid and secured in place, and I Figure '5 is aperspective View of the main body or .under fastening member of afastener and showing the same in the shape or r pen position that it issupplied to the trade Ior use. r

In the drawingfi, 6, indicates the roof boards of a roof, 7, 7, rollroofing and 8 my improved roll roofing fastener which consists ofanattachable under fastening member 9. and a loop shaped fasteningmember 10, permanentlysecu-red to the roll roofing-adjacent the edge ofthe roll roofing. The roof boards 6, 6, may also represent the sheathingon the outer walls of a building.

The roll roofing 7, 7 is usually laid in strips lengthwise of the roof,first a narrow strip at he roof edge and then the strips are laid fullwidth,'the lower edge portion of each upper course overlappingthe upperedge portion of the next lower course, as shown in Figure 4.

The attachable under fastening member 9 is formed preferably of sheetmetal and is constructed to have a fiat elongated base arm 11, in whichis an aperturelQ, said base arm 11 terminating into a reduced androunded end 13. The base arm 11 has a bent over end portion 14 whichmerges into an overlapping upper arm 15 having a downwardly bentclamping finger 16 in a position to enter and pass through the aperture12. This clamp ing finger 16 has a pointed projection 16a at its bentportion, as shown in Figures 3 and The upper arm 15 alsohas a narrowedend portion 17, with a hook shaped end portion 18 which is turned backover the narrowed end portion 17 and terminates into a bent back end 19,which normally contacts with the narrowed end portion 17, therebyforming a thin opening between the endportion 17 and the hook shaped end18, for securing the hook shaped end portion 18 to a loop shapedfastening member 10.

The loop shaped fastening memberlO may be made of any suitable materialsuch as tape, cord or wire. ,Vhen made ofwire the loop fastening portion20 lays parallel with the under surface of the roll roofing 7, the ends21, 21, of the loop are'then forced into the roll roofing 7 and thenbent over, thereby securing the loop fastening members 10, 10, to theroll roofing 7, as shown in Figure 2. The top coating or finishin coatof asphalt is then applied to the roll roofing thereby covering andwater-proofing the loops.

iVhen my improved roll roofing fasteners are put to use, the operationof fastening the lower edge portion of a strip of roll roofing in placeon a roof, is as follows. The upper edgeportion of a'lower course ofroll roofing is nailed to the roof boards 6, 6, by nails 22, 22, apredetermined distance apart, or practically the distance apart of theloopshaped fastening members 10, 10, on the roll roofing. The hookedshaped end portion 18 of the under fastening member 9 is then forcedthrough a looped shaped fastening member 10,. in the direction of thearrow 0, in Figure 3, and the rounded end 13 of the under fasteningmember 9 inserted under the upper edge of the lower course of rollroofing, as shown in Figure 3. This is continued the entire length ofthestrip of roll roofing, one under fastening member 9 to each upper loopfastening member 10 and the under fastening members 9, 9 lying betweenthe nails-22, 22, as shown in Figure 1. The upper strip of roll roofingis now brought downwards overthe lower course of roll roofing, therebyforcing the base arms 11, 11, of the under fastening members 9, 9, underthe upper edge portion of the previously laid and nailed course of rollroofing. Pressure is now ap plied to the upper course of roll roofingover the fastening members, thereby forcing .the base and upper arms ofthe under fastening member 9, together. This forcing the arms of theunder fastening member together forces the end portion of the clampingfinger 16 through the aperture 12 and then, striking the roof boards 6,6, it is bent under the base arm 11, thereby locking the two arms of theunder fastening member together, thus preventing the lower edge portionof the roll roofing from lifting up. This operationalso forces thepointed projections 16a, 16a, into the roof boards 6, 6, as shown inFigure 1, tnereby preventing an upward movement of the roll roofing. Thebent back end 19 of the hook shaped end 18 of the underfastening member9 prevents a retrograde movement of the loop 10 in the hookedshaped endpor- 'tion 18 of the under fastening member 9 and locks the upper loopshaped fastening member 10 tothe under. fastening member 9.

Having thus described my invention I claim as new 1. A roll roofingfastener comprising an upper and an under fastening member, the upperfastening member being in the form of a loop and forming an integralpart of the roll roofing and the under fastening member having anelement which fastens to the upper fastening member, an element adaptedto go under the edge portion of roll roofing previously laid, an elementadapted to lock the two previously mentioned elements together and apointed element adapted to penetrate the roof boards of a roof, for thepurpose as described.

52. The combination with flexible roll, roofing material in the form ofa long wide strip of a series of loops extending lengthwise of the stripadjacent one edge thereof, each loop being secured at its ends to theunderside of and forming an integral part of the strip, for the purposeas described.

In testimony whereof, I have signed my name to this specification.

ALBERT ABBE GRISVVOLD.

